ENTRY 30239 20160708 31743023900000001 SUBENT 30239001 20160708 31743023900100001 BIB 14 47 3023900100002 INSTITUTE (3ARGCNE) 3023900100003 REFERENCE (J,CJP,51,1454,1973) 3023900100004 (R,INDC(ARG)-7,1973) Preprint of paper to be published 3023900100005 (R,INDC(ARG)-3,1973) Short progress report,no data 3023900100006 AUTHOR (M.D.Ricabarra,R.Turjanski,G.H.Ricabarra) 3023900100007 TITLE Measurement and evaluation of the activation resonance 3023900100008 integral of Nd-146,Nd-148 and Nd-150 3023900100009 INC-SOURCE (REAC) Central graphite reflector of reactor RA-1 3023900100010 SAMPLE Neodymium-gold samples 3mg/cm2 thick containing 3 parts3023900100011 of gold per 10000 parts of neodymium. 3023900100012 METHOD The cadmium ratio technique was applied to determine 3023900100013 the ratio of the reduced epithermal resonance integral 3023900100014 to the thermal capture cross section 3023900100015 DETECTOR (GELI) 3023900100016 ANALYSIS The reduced resonance integral was obtained by 3023900100017 multiplying the epithermal integral by a correction 3023900100018 factor, F, which represents the ratio of epithermal 3023900100019 neutron captures in a 1/E spectrum to the epithermal 3023900100020 neutron captures in the actual reactor spectrum. 3023900100021 A calculation and an evaluation of the reduced 3023900100022 epithermal and resonance integral was also undertaken 3023900100023 taking into account resonance parameters obtained from 3023900100024 different published time of flight experiments. A 3023900100025 calculation of the unresolved resonance integral was 3023900100026 made using high energy radiative cross sections 3023900100027 obtained from published statistical model calculations.3023900100028 MONITOR Ratios of reduced capture resonance integral to thermal3023900100029 cross section determined relative to gold, with a gold-3023900100030 cadmium ratio of 1.684+-0.003 and a value of the ratio 3023900100031 of resonance integral to thermal cross section of gold 3023900100032 of 15.7 3023900100033 STATUS (APRVD) Approved by Ricabarra (19730815) 3023900100034 HISTORY (19730530C) FM. 3023900100035 (19731016U)CA. .Status approved added. 3023900100036 .Author's comments concerning the 3023900100037 evaluation part were added in subentries 3023900100038 30239.001,5,6,7. 3023900100039 .Mispunch in Isoquant of subentry 3023900100040 30239.003 Corrected. 3023900100041 (19831213U) DG.-New reference added,cosmetic correction3023900100042 in BIB section,conversion from Iso-quant to Reaction 3023900100043 formalism.- 3023900100044 (20080211A) BIB section updated 3023900100045 (20160623U) VS. DECAY-DATA corrected in 004. 3023900100046 CORRECTION Epithermal neutron depression in cadmium and resonance 3023900100047 self-shielding found to be negligible. 3023900100048 ERR-ANALYS (DATA-ERR) No further information 3023900100049 ENDBIB 47 0 3023900100050 COMMON 2 3 3023900100051 EN-MIN EN-NRM 3023900100052 EV EV 3023900100053 6.0000E-01 2.5300E-02 3023900100054 ENDCOMMON 3 0 3023900100055 ENDSUBENT 54 0 3023900199999 SUBENT 30239002 20081203 31323023900200001 BIB 5 9 3023900200002 REACTION 1((60-ND-146(N,G)60-ND-147,,RI)/ 3023900200003 (60-ND-146(N,G)60-ND-147,,SIG)) 3023900200004 Ratio to thermal capture cross section 3023900200005 2(60-ND-146(N,G)60-ND-147,,RI) 3023900200006 Activation epithermal integral 3023900200007 DECAY-DATA (60-ND-147,11.D,DG,91.,,DG,531.) 3023900200008 MONITOR (60-ND-146(N,G)60-ND-147,,SIG) at energy 0.025 eV. 3023900200009 MONIT-REF (,W.H.WALKER,R,AECL-3037,1,196912) 3023900200010 STATUS (TABLE) Data taken from Can.J.Phys.51(1973)1454,Tbl. 4.3023900200011 ENDBIB 9 0 3023900200012 NOCOMMON 0 0 3023900200013 DATA 5 1 3023900200014 DATA 1DATA-ERR 1MONIT DATA 2DATA-ERR 2 3023900200015 NO-DIM NO-DIM B B B 3023900200016 1.8400E+00 3.0000E-02 1.4000E+00 2.5800E+00 2.0000E-01 3023900200017 ENDDATA 3 0 3023900200018 ENDSUBENT 17 0 3023900299999 SUBENT 30239003 20081203 31323023900300001 BIB 5 11 3023900300002 REACTION 1((60-ND-148(N,G)60-ND-149,,RI)/ 3023900300003 (60-ND-148(N,G)60-ND-149,,SIG)) 3023900300004 2(60-ND-148(N,G)60-ND-149,,RI) 3023900300005 DECAY-DATA (60-ND-149,1.8HR) 3023900300006 (61-PM-149,53.1HR,DG,285.) 3023900300007 Nd-149 decay to Pm-149. 3023900300008 285 keV photopeak of Pm-149 was selected to measure 3023900300009 the cadmium ratio. 3023900300010 MONITOR (60-ND-148(N,G)60-ND-149,,SIG) at energy 0.025 eV. 3023900300011 MONIT-REF (,W.H.WALKER,R,AECL-3037,1,196912) 3023900300012 STATUS (TABLE) Data taken from Can.J.Phys.51(1973)1454,Tbl. 4.3023900300013 ENDBIB 11 0 3023900300014 NOCOMMON 0 0 3023900300015 DATA 5 1 3023900300016 DATA 1DATA-ERR 1MONIT DATA 2DATA-ERR 2 3023900300017 NO-DIM NO-DIM B B B 3023900300018 4.6900E+00 1.1000E-01 2.5000E+00 1.1700E+01 1.0000E+00 3023900300019 ENDDATA 3 0 3023900300020 ENDSUBENT 19 0 3023900399999 SUBENT 30239004 20160708 31743023900400001 BIB 6 14 3023900400002 REACTION 1((60-ND-150(N,G)60-ND-151,,RI)/ 3023900400003 (60-ND-150(N,G)60-ND-151,,SIG)) 3023900400004 Ratio to thermal capture cross section. 3023900400005 2(60-ND-150(N,G)60-ND-151,,RI) 3023900400006 Activation epithermal integral 3023900400007 DECAY-DATA (60-ND-151,12.MIN) 3023900400008 (61-PM-151,28.HR,DG,340.) 3023900400009 Nd-151 decay to Pm-151. 3023900400010 340 keV photopeak of Pm-181 was selected to measure 3023900400011 the cadmium ratio. 3023900400012 MONITOR (60-ND-150(N,G)60-ND-151,,SIG) at energy 0.0253 eV. 3023900400013 MONIT-REF (,W.H.Walker,R,AECL-3037,1,1969) 3023900400014 STATUS (TABLE) Data taken from Can.J.Phys.51(1973)1454,Tbl. 4.3023900400015 HISTORY (20160623U) VS. DECAY-DATA corrected. 3023900400016 ENDBIB 14 0 3023900400017 NOCOMMON 0 0 3023900400018 DATA 5 1 3023900400019 DATA 1DATA-ERR 1MONIT DATA 2DATA-ERR 2 3023900400020 NO-DIM NO-DIM B B B 3023900400021 1.5600E+01 8.0000E-01 1.2000E+00 1.8700E+01 3.2000E+00 3023900400022 ENDDATA 3 0 3023900400023 ENDSUBENT 22 0 3023900499999 SUBENT 30239005 20081203 31323023900500001 BIB 4 14 3023900500002 REACTION (60-ND-146(N,G)60-ND-147,,RI,,RNV) 3023900500003 Reduced resonance integral obtained from epithermal 3023900500004 integral value by multiplying by correction factor 3023900500005 F=0.77+-0.05 3023900500006 COMMENT Calculated epithermal and resonance integral values 3023900500007 were 2.92 barn and 2.24 barn respectively. 3023900500008 A good agreement is observed in the calculated resolved3023900500009 integral using resonance parameters obtained from two 3023900500010 time of flight experiments. The calculated unresolved 3023900500011 integral is comparable in magnitude with the resolved 3023900500012 one. 3023900500013 STATUS (DEP,30239002) 3023900500014 Data taken from Can.J.Phys.51(1973)1454,Table 5. 3023900500015 ERR-ANALYS (ERR-SYS) 6% systematic error in F 3023900500016 ENDBIB 14 0 3023900500017 COMMON 1 3 3023900500018 ERR-SYS 3023900500019 PER-CENT 3023900500020 6.0 3023900500021 ENDCOMMON 3 0 3023900500022 DATA 2 1 3023900500023 DATA DATA-ERR 3023900500024 B B 3023900500025 1.9900E+00 2.0000E-01 3023900500026 ENDDATA 3 0 3023900500027 ENDSUBENT 26 0 3023900599999 SUBENT 30239006 20081203 31323023900600001 BIB 4 15 3023900600002 REACTION (60-ND-148(N,G)60-ND-149,,RI,,RNV) 3023900600003 Reduced resonance integral obtained from epithermal 3023900600004 integral value by multiplying by correction factor 3023900600005 F = 0.90+-0.02 3023900600006 COMMENT Calculated epithermal and resonance integral values 3023900600007 were 28.73 barn and 25.76 barn respectively. 3023900600008 Activation resonance integral is about half of the 3023900600009 value recommended by walker and of the calculated one. 3023900600010 Comparison of radiative width obtained by different 3023900600011 time of flight experiments shows that this value is 3023900600012 uncertain by a factor of two or more, and suggests 3023900600013 that the calculated value may be in error. 3023900600014 STATUS (DEP,30239003) 3023900600015 Data taken from Can.J.Phys.51(1973)1454,Table 5. 3023900600016 ERR-ANALYS (ERR-SYS) 2% systematic error in F 3023900600017 ENDBIB 15 0 3023900600018 COMMON 1 3 3023900600019 ERR-SYS 3023900600020 PER-CENT 3023900600021 2.0 3023900600022 ENDCOMMON 3 0 3023900600023 DATA 2 1 3023900600024 DATA DATA-ERR 3023900600025 B B 3023900600026 1.0500E+01 9.0000E-01 3023900600027 ENDDATA 3 0 3023900600028 ENDSUBENT 27 0 3023900699999 SUBENT 30239007 20081203 31323023900700001 BIB 4 12 3023900700002 REACTION (60-ND-150(N,G)60-ND-151,,RI,,RNV) 3023900700003 Reduced resonance integral obtained from epithermal 3023900700004 integral value by multiplying by the correction factor 3023900700005 F = 0.88+-0.02 3023900700006 COMMENT Calculated epithermal and resonance integral values 3023900700007 were 17.21 barn and 15.11 barn respectively. 3023900700008 The resonance integrals calculated with published 3023900700009 resonance parameters obtained by three time of flight 3023900700010 experiments are in reasonable agreement. 3023900700011 STATUS (DEP,30239004) 3023900700012 Data taken from Can.J.Phys.51(1973)1454,Table 5. 3023900700013 ERR-ANALYS (ERR-SYS) 2% systematic error in F 3023900700014 ENDBIB 12 0 3023900700015 COMMON 1 3 3023900700016 ERR-SYS 3023900700017 PER-CENT 3023900700018 2.0 3023900700019 ENDCOMMON 3 0 3023900700020 DATA 2 1 3023900700021 DATA DATA-ERR 3023900700022 B B 3023900700023 1.6400E+01 2.8000E+00 3023900700024 ENDDATA 3 0 3023900700025 ENDSUBENT 24 0 3023900799999 ENDENTRY 7 0 3023999999999